Skinner, B. J. (1976). Earth resources (2nd ed.). Prentice-hall.
Chicagoスタイル(17版)引用形式Skinner, Brian J. Earth Resources. 2nd ed. Englewood Cliffs, N. J: Prentice-hall, 1976.
MLA(9版)引用形式Skinner, Brian J. Earth Resources. 2nd ed. Prentice-hall, 1976.
警告: この引用は必ずしも正確ではありません.